A Study on Efficiency and Emission Enhancements in a 4-Stroke Natural Gas Lean Burn Engine 960849
Experiments were performed with a 4-stroke, natural gas fueled SI engine to investigate the effects of several parameters on engine performance under lean operating condition. A favorable effect of charge swirl on stable lean burn operation was observed at a conventional compression ratio. There was an optimum EGR rate which gave a substantial reduction in NOx emissions with minor penalties in efficiency and UHC emissions. Marginal improvement was noticed with lean operations in a long spark duration ignition system. The flame jet ignition system displayed noticeable capability in extending the lean limit. In addition, shadowgraph visualization tests were performed for combustion diagnostic purposes.
Citation: Kim, S., Kim, C., Kim, C., Pang, H. et al., "A Study on Efficiency and Emission Enhancements in a 4-Stroke Natural Gas Lean Burn Engine," SAE Technical Paper 960849, 1996, https://doi.org/10.4271/960849. Download Citation
Author(s):
Sung Soo Kim, Chang Gi Kim, Chang Up Kim, Hyo Sun Pang, Jeong Ok Han, Yang Soo Cho
Affiliated:
Korea Advanced Institute of Science and Technology, Korea Gas Co.
Pages: 15
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Performance of Alternative Fuels for SI and Ci Engines-SP-1160
Related Topics:
Lean burn engines
Spark ignition engines
Ignition systems
Natural gas
Combustion and combustion processes
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